 | C4X-18318 | N/A | Impurity | |
| Mezlocillin Impurity 8 |
| C4X-18319 | N/A | Impurity | |
| Mezlocillin Impurity 9 |
 | C4X-18321 | 154361-51-0 | Impurity | |
| Iopromide EP Impurity A |
| C4X-183210 | 76801-94-0 | Impurity | |
| Iopromide Impurity 10 |
| C4X-183211 | N/A | Impurity | |
| Iopromide Impurity 11 |
| C4X-183212 | N/A | Impurity | |
| Iopromide Impurity 12 |
 | C4X-18322 | 76350-28-2 | Impurity | |
| Iopromide EP Impurity B |
 | C4X-18323 | 154361-52-1 | Impurity | |
| Iopromide EP Impurity C (Mixture of Diastereomers) |
 | C4X-18324 | 154361-55-4 | Impurity | |
| Iopromide EP Impurity D (Mixture of Diastereomers) |
 | C4X-18325 | 154397-78-1 | Impurity | |
| Iopromide EP Impurity E (Mixture of Diastereomers) |
